Collocated Interfacial Stress Intensity Factors for Finite, Bi-Material Plates,
Abstract
The paper examines elastic stress intensity factors associated with partially debonded interfaces in finite, bi-material plates. Bi-material stress intensity factors K(1) and K(2) are functions of an arbitrary length parameter; certainly any fracture condition involving bi-material stress intensity factors must be independent of a length parameter as in the homogeneous case. One defines a new quantity K(i) called the interfacial stress intensity factor which is independent of an arbitrary length parameter. A truncated Williams power series stress function for stresses in a cracked bi-material plate, as modified by Sih and Rice, is used with an improved boundary collocation procedure to generate interfacial stress intensity factors for finite bi-material plates. This modified collocation technique eliminates the need for tuning the boundary points. The method is exemplified by application to a centrally cracked bi-material plate and to a partially debonded composite laminate. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1970
- Accession Number
- AD0716334
Entities
People
- Stephen Gerard Sawyer
Organizations
- Ballistic Research Laboratory